:root {
    --primary-color: #0d47a1;
    --secondary-color: #00e5ff;
    --accent-color: #00e676;
    --dark-bg: linear-gradient(135deg, #0d47a1, #000000);
    --light-text: #ffffff;
    --card-bg: rgba(255, 255, 255, 0.1);
    --transition: all 0.3s ease;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    background: var(--dark-bg);
    color: var(--light-text);
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .header {
    text-align: center;
    padding: 3rem 0;
    position: relative;
    overflow: hidden;
  }

  .header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, rgba(0, 229, 255, 0.1), transparent 70%);
    z-index: -1;
  }

  h1, h2, h3, h4 {
    font-weight: 500;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }

  h1 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, #00e5ff, #00e676);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
  }

  h2 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    position: relative;
    padding-bottom: 0.5rem;
  }

  h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary-color), transparent);
  }

  h3 {
    font-size: 1.5rem;
    color: var(--accent-color);
    margin-top: 2rem;
  }

  p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
  }

  .nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(13, 71, 161, 0.9);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  }

  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-text);
    text-decoration: none;
    display: flex;
    align-items: center;
  }

  .nav-logo span {
    color: var(--secondary-color);
  }

  .nav-links {
    display: flex;
    gap: 2rem;
  }

  .nav-link {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
  }

  .nav-link::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary-color);
    transition: var(--transition);
  }

  .nav-link:hover {
    color: var(--secondary-color);
  }

  .nav-link:hover::after {
    width: 100%;
  }

  .content {
    padding-top: 100px;
    padding-bottom: 4rem;
  }

  .article-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }

  .article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
  }

  .image-card {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: var(--transition);
    aspect-ratio: 1/1;
  }

  .image-card:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
  }

  .image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }

  .image-card:hover img {
    transform: scale(1.1);
  }

  .image-card::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 60%, rgba(0, 0, 0, 0.7)));
  }

  pre {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 2rem 0;
    overflow: auto;
    border-left: 4px solid var(--secondary-color);
    font-family: 'Courier New', monospace;
    line-height: 1.5;
  }

  code {
    font-family: 'Courier New', monospace;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
  }

  .footer {
    text-align: center;
    padding: 2rem 0;
    background: rgba(0, 0, 0, 0.3);
    margin-top: 4rem;
  }

  .footer p {
    margin-bottom: 0;
  }

  .tech-badge {
    display: inline-block;
    background: rgba(0, 229, 255, 0.2);
    color: var(--secondary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
    border: 1px solid rgba(0, 229, 255, 0.3);
  }

  .reference-note {
    background: rgba(0, 230, 118, 0.1);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    margin: 2rem 0;
  }

  .reference-note p {
    margin-bottom: 0;
    color: var(--accent-color);
    font-weight: 500;
  }

  @media (max-width: 768px) {
    h1 {
      font-size: 2rem;
    }
    
    h2 {
      font-size: 1.5rem;
    }
    
    h3 {
      font-size: 1.3rem;
    }
    
    .nav-links {
      gap: 1rem;
    }
    
    .article-card {
      padding: 1.5rem;
    }
    
    .image-grid {
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
  }

  @media (max-width: 480px) {
    h1 {
      font-size: 1.8rem;
    }
    
    .nav-container {
      flex-direction: column;
      gap: 1rem;
    }
    
    .nav-links {
      flex-wrap: wrap;
      justify-content: center;
    }
    
    .content {
      padding-top: 140px;
    }
    
    .image-grid {
      grid-template-columns: 1fr;
    }
  }

  /* Animations */
  @keyframes float {
    0%, 100% {
      transform: translateY(0);
    }
    50% {
      transform: translateY(-10px);
    }
  }

  @keyframes pulse {
    0%, 100% {
      opacity: 1;
    }
    50% {
      opacity: 0.6;
    }
  }

  .floating {
    animation: float 4s ease-in-out infinite;
  }

  .pulse {
    animation: pulse 2s ease-in-out infinite;
  }